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// { dg-do run { target c++11 } }
// Copyright (C) 2014-2019 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// 27.8.4.2 Assign and swap [ostringstream.assign]
#include <sstream>
#include <string>
#include <testsuite_hooks.h>
const std::string strings[] = {
"one could carry out the description of a machine, ",
"no matter how complicated, ",
"in characters which would be merely the letters of the alphabet, and so ",
"provide the mind with a method of knowing the machine and all its parts"
};
void
append(std::ostringstream& ss, std::string& s, const std::string& t)
{
ss << t;
s += t;
}
// assign
void
test01()
{
std::string exp;
std::ostringstream s1;
append(s1, exp, strings[0]);
std::ostringstream s2;
s2 = std::move(s1);
VERIFY( s2.str() == exp );
append(s2, exp, strings[1]);
VERIFY( s2.str() == exp );
std::ostringstream s3;
s3 = std::move(s2);
VERIFY( s3.str() == exp );
append(s3, exp, strings[2]);
VERIFY( s3.str() == exp );
s1.setstate(std::ios::failbit);
s1 = std::move(s3);
VERIFY( s1.good() );
VERIFY( s1.str() == exp );
append(s1, exp, strings[3]);
VERIFY( s1.str() == exp );
}
// swap
void
test02()
{
std::string exp;
std::ostringstream s1;
append(s1, exp, strings[0]);
std::ostringstream s2;
s2.swap(s1);
VERIFY( s1.str().empty() );
VERIFY( s2.str() == exp );
append(s2, exp, strings[1]);
VERIFY( s2.str() == exp );
std::ostringstream s3;
swap(s3, s2);
VERIFY( s2.str().empty() );
VERIFY( s3.str() == exp );
append(s3, exp, strings[2]);
VERIFY( s3.str() == exp );
s1.setstate(std::ios::failbit);
swap(s1, s3);
VERIFY( s1.good() );
VERIFY( s3.fail() );
VERIFY( s2.str().empty() );
VERIFY( s1.str() == exp );
append(s1, exp, strings[3]);
VERIFY( s1.str() == exp );
}
void
test03()
{
#ifdef _GLIBCXX_USE_WCHAR_T
std::wistringstream s0, s;
s = std::move(s0);
s.swap(s0);
swap(s, s0);
#endif
}
int
main()
{
test01();
test02();
test03();
}
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